fix(shorebird_cli): ensure release artifacts are all built using the same flutter revision

[felangel]

Description

• fix(shorebird_cli): ensure release artifacts are all built using the same flutter revision
  • closes fix: patch created with wrong snapshot version #1894

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[codecov]

Codecov Report

Attention: Patch coverage is 73.33333% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 87.83%. Comparing base (2972919) to head (dc69224).

❗ Current head dc69224 differs from pull request most recent head d57bcee. Consider uploading reports for the commit d57bcee to get more accurate results

Files	Patch %	Lines
.../lib/src/commands/release/release_ios_command.dart	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1911       +/-   ##
===========================================
- Coverage   99.98%   87.83%   -12.15%     
===========================================
  Files         174      174               
  Lines        5476     5491       +15     
===========================================
- Hits         5475     4823      -652     
- Misses          1      668      +667     

Flag	Coverage Δ
shorebird_cli	84.32% <73.33%> (-15.65%)	⬇️

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